Thunderstorm Wind — Johnson, Tennessee

2016-11-30 · near Mountain City, Johnson, Tennessee

Event narrative

Several trees were downed and a utility building was blown over.

Wider weather episode

A strong upper level system moved through the Eastern United States late Tuesday into early Wednesday. The associated surface low pressure system pressed north northeast from the Lower Mississippi across the Mid South on its way across the Lower Ohio Valley. While there were reports of damaging straight line wind with some of the thunderstorms generated ahead of the system cold front, the main and concentrated areas of damage were associated with tornadic supercell thunderstorms. The supercell storms developed in an area of strong shear and sufficient; albeit weak instability. Tornadoes formed in a zone favorable to rotating thunderstorm updrafts just north of a warm frontal boundary across the Tennessee Valley of Alabama northeast through Southeast Tennessee. Three tornadoes developed during the early morning hours on Wednesday, November 30th; impacting McMinn, Polk, Marion, and Sequatchie counties.

View location on OpenStreetMap → (36.4700, -81.8100)

Source: NOAA Storm Events Database, event_id 662346. Narrative written by the NWS forecast office that issued the report.